strip



STRIP(1)                     GNU Development Tools                    STRIP(1)




NAME

       strip - Discard symbols from object files.


SYNOPSIS

       strip [-F bfdname--target=bfdname]
             [-I bfdname--input-target=bfdname]
             [-O bfdname--output-target=bfdname]
             [-s--strip-all]
             [-S-g-d--strip-debug]
             [-K symbolname--keep-symbol=symbolname]
             [-N symbolname--strip-symbol=symbolname]
             [-w--wildcard]
             [-x--discard-all] [-X--discard-locals]
             [-R sectionname--remove-section=sectionname]
             [-o file] [-p--preserve-dates]
             [--only-keep-debug]
             [-v--verbose] [-V--version]
             [--help] [--info]
             objfile...


DESCRIPTION

       GNU  strip discards all symbols from object files objfile.  The list of
       object files may include archives.  At least one object  file  must  be
       given.

       strip  modifies  the  files  named in its argument, rather than writing
       modified copies under different names.


OPTIONS

       -F bfdname
       --target=bfdname
           Treat the original objfile as a file with the  object  code  format
           bfdname, and rewrite it in the same format.

       --help
           Show a summary of the options to strip and exit.

       --info
           Display  a list showing all architectures and object formats avail-
           able.

       -I bfdname
       --input-target=bfdname
           Treat the original objfile as a file with the  object  code  format
           bfdname.

       -O bfdname
       --output-target=bfdname
           Replace objfile with a file in the output format bfdname.

       -R sectionname
       --remove-section=sectionname
           Remove  any  section  named sectionname from the output file.  This
           option may be given more than once.  Note that  using  this  option
           inappropriately may make the output file unusable.

       -s
       --strip-all
           Remove all symbols.

       -g
       -S
       -d
       --strip-debug
           Remove debugging symbols only.

       --strip-unneeded
           Remove all symbols that are not needed for relocation processing.

       -K symbolname
       --keep-symbol=symbolname
           Keep  only symbol symbolname from the source file.  This option may
           be given more than once.

       -N symbolname
       --strip-symbol=symbolname
           Remove symbol symbolname from the source file. This option  may  be
           given  more than once, and may be combined with strip options other
           than -K.

       -o file
           Put the stripped output in file, rather than replacing the existing
           file.  When this argument is used, only one objfile argument may be
           specified.

       -p
       --preserve-dates
           Preserve the access and modification dates of the file.

       -w
       --wildcard
           Permit regular expressions in symbolnames  used  in  other  command
           line  options.   The question mark (?), asterisk (*), backslash (\)
           and square brackets ([]) operators can be used anywhere in the sym-
           bol  name.  If the first character of the symbol name is the excla-
           mation point (!) then the sense of the switch is reversed for  that
           symbol.  For example:

                     -w -K !foo -K fo*

           would  cause strip to only keep symbols that start with the letters
           ‘‘fo’’, but to discard the symbol ‘‘foo’’.

       -x
       --discard-all
           Remove non-global symbols.

       -X
       --discard-locals
           Remove compiler-generated local symbols.  (These usually start with
           L or ..)

       --only-keep-debug
           Strip  a  file,  removing  any  sections  that would be stripped by
           --strip-debug and leaving the debugging sections.

           The intention is that this option will be used in conjunction  with
           --add-gnu-debuglink  to  create  a  two  part  executable.   One  a
           stripped binary which will occupy less space in RAM and in  a  dis-
           tribution and the second a debugging information file which is only
           needed if debugging abilities are required.  The  suggested  proce-
           dure to create these files is as follows:

           1.<Link the executable as normal.  Assuming that is is called>
               "foo" then...

           1.<Run "objcopy --only-keep-debug foo foo.dbg" to>
               create a file containing the debugging info.

           1.<Run "objcopy --strip-debug foo" to create a>
               stripped executable.

           1.<Run "objcopy --add-gnu-debuglink=foo.dbg foo">
               to  add  a  link  to  the debugging info into the stripped exe-
               cutable.

           Note - the choice of ".dbg" as an extension for the debug info file
           is  arbitrary.  Also the "--only-keep-debug" step is optional.  You
           could instead do this:

           1.<Link the executable as normal.>
           1.<Copy "foo" to  "foo.full">
           1.<Run "strip --strip-debug foo">
           1.<Run "objcopy --add-gnu-debuglink=foo.full foo">

           ie the file pointed to by the --add-gnu-debuglink can be  the  full
           executable.   It  does  not  have  to  be  a  file  created  by the
           --only-keep-debug switch.

       -V
       --version
           Show the version number for strip.

       -v
       --verbose
           Verbose output: list all object files modified.   In  the  case  of
           archives, strip -v lists all members of the archive.


SEE ALSO

       the Info entries for binutils.


COPYRIGHT

       Copyright  (c)  1991,  1992,  1993, 1994, 1995, 1996, 1997, 1998, 1999,
       2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.

       Permission is granted to copy, distribute and/or modify  this  document
       under  the  terms of the GNU Free Documentation License, Version 1.1 or
       any later version published by the Free Software  Foundation;  with  no
       Invariant  Sections,  with no Front-Cover Texts, and with no Back-Cover
       Texts.  A copy of the license is included in the section entitled ‘‘GNU
       Free Documentation License’’.



binutils-2.15.94.0.2.2            2005-06-29                          STRIP(1)

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